The stock market on September 26, 1984
September 26, 1984, a Wednesday. The S&P 500 rose 0.40% to close at 166.28. Of 5,779 US stocks that traded, 1,582 rose and 1,541 fell.
The S&P 500+0.40%closed at 166.28
How big a move#14,401of 24,799 trading days since 1928
$100 in the index since$4,633price only, to September 24, 2026
Stocks that rose1,582of 5,779; 1,541 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for10stocks
Biggest rises among the 500 largest companies
| Rolm (RM) | +8.1% |
| Ceridian Corp (CEN) | +5.6% |
| Sprint Nextel (FON) | +3.8% |
Biggest falls among the 500 largest companies
| National Semiconductor (NSM) | -6.4% |
| Motorola Solutions (MOT) | -6.0% |
| Sperry (SY) | -4.3% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 25, 1984 · Every September 26 · September 27, 1984 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.